| /* |
| * Description: run various linked sqe tests |
| * |
| */ |
| #include <errno.h> |
| #include <stdio.h> |
| #include <unistd.h> |
| #include <stdlib.h> |
| #include <string.h> |
| #include <fcntl.h> |
| |
| #include "liburing.h" |
| |
| /* |
| * Test failing head of chain, and dependent getting -ECANCELED |
| */ |
| static int test_single_link_fail(struct io_uring *ring) |
| { |
| struct io_uring_cqe *cqe; |
| struct io_uring_sqe *sqe; |
| int ret, i; |
| |
| sqe = io_uring_get_sqe(ring); |
| if (!sqe) { |
| printf("get sqe failed\n"); |
| goto err; |
| } |
| |
| io_uring_prep_nop(sqe); |
| sqe->flags |= IOSQE_IO_LINK; |
| |
| sqe = io_uring_get_sqe(ring); |
| if (!sqe) { |
| printf("get sqe failed\n"); |
| goto err; |
| } |
| |
| io_uring_prep_nop(sqe); |
| |
| ret = io_uring_submit(ring); |
| if (ret <= 0) { |
| printf("sqe submit failed: %d\n", ret); |
| goto err; |
| } |
| |
| for (i = 0; i < 2; i++) { |
| ret = io_uring_peek_cqe(ring, &cqe); |
| if (ret < 0) { |
| printf("wait completion %d\n", ret); |
| goto err; |
| } |
| if (!cqe) { |
| printf("failed to get cqe\n"); |
| goto err; |
| } |
| if (i == 0 && cqe->res != -EINVAL) { |
| printf("sqe0 failed with %d, wanted -EINVAL\n", cqe->res); |
| goto err; |
| } |
| if (i == 1 && cqe->res != -ECANCELED) { |
| printf("sqe0 failed with %d, wanted -ECANCELED\n", cqe->res); |
| goto err; |
| } |
| io_uring_cqe_seen(ring, cqe); |
| } |
| |
| return 0; |
| err: |
| return 1; |
| } |
| |
| /* |
| * Test two independent chains |
| */ |
| static int test_double_chain(struct io_uring *ring) |
| { |
| struct io_uring_cqe *cqe; |
| struct io_uring_sqe *sqe; |
| int ret, i; |
| |
| sqe = io_uring_get_sqe(ring); |
| if (!sqe) { |
| printf("get sqe failed\n"); |
| goto err; |
| } |
| |
| io_uring_prep_nop(sqe); |
| sqe->flags |= IOSQE_IO_LINK; |
| |
| sqe = io_uring_get_sqe(ring); |
| if (!sqe) { |
| printf("get sqe failed\n"); |
| goto err; |
| } |
| |
| io_uring_prep_nop(sqe); |
| |
| sqe = io_uring_get_sqe(ring); |
| if (!sqe) { |
| printf("get sqe failed\n"); |
| goto err; |
| } |
| |
| io_uring_prep_nop(sqe); |
| sqe->flags |= IOSQE_IO_LINK; |
| |
| sqe = io_uring_get_sqe(ring); |
| if (!sqe) { |
| printf("get sqe failed\n"); |
| goto err; |
| } |
| |
| io_uring_prep_nop(sqe); |
| |
| ret = io_uring_submit(ring); |
| if (ret <= 0) { |
| printf("sqe submit failed: %d\n", ret); |
| goto err; |
| } |
| |
| for (i = 0; i < 4; i++) { |
| ret = io_uring_wait_cqe(ring, &cqe); |
| if (ret < 0) { |
| printf("wait completion %d\n", ret); |
| goto err; |
| } |
| io_uring_cqe_seen(ring, cqe); |
| } |
| |
| return 0; |
| err: |
| return 1; |
| } |
| |
| /* |
| * Test multiple dependents |
| */ |
| static int test_double_link(struct io_uring *ring) |
| { |
| struct io_uring_cqe *cqe; |
| struct io_uring_sqe *sqe; |
| int ret, i; |
| |
| sqe = io_uring_get_sqe(ring); |
| if (!sqe) { |
| printf("get sqe failed\n"); |
| goto err; |
| } |
| |
| io_uring_prep_nop(sqe); |
| sqe->flags |= IOSQE_IO_LINK; |
| |
| sqe = io_uring_get_sqe(ring); |
| if (!sqe) { |
| printf("get sqe failed\n"); |
| goto err; |
| } |
| |
| io_uring_prep_nop(sqe); |
| sqe->flags |= IOSQE_IO_LINK; |
| |
| sqe = io_uring_get_sqe(ring); |
| if (!sqe) { |
| printf("get sqe failed\n"); |
| goto err; |
| } |
| |
| io_uring_prep_nop(sqe); |
| |
| ret = io_uring_submit(ring); |
| if (ret <= 0) { |
| printf("sqe submit failed: %d\n", ret); |
| goto err; |
| } |
| |
| for (i = 0; i < 3; i++) { |
| ret = io_uring_wait_cqe(ring, &cqe); |
| if (ret < 0) { |
| printf("wait completion %d\n", ret); |
| goto err; |
| } |
| io_uring_cqe_seen(ring, cqe); |
| } |
| |
| return 0; |
| err: |
| return 1; |
| } |
| |
| /* |
| * Test single dependency |
| */ |
| static int test_single_link(struct io_uring *ring) |
| { |
| struct io_uring_cqe *cqe; |
| struct io_uring_sqe *sqe; |
| int ret, i; |
| |
| sqe = io_uring_get_sqe(ring); |
| if (!sqe) { |
| printf("get sqe failed\n"); |
| goto err; |
| } |
| |
| io_uring_prep_nop(sqe); |
| sqe->flags |= IOSQE_IO_LINK; |
| |
| sqe = io_uring_get_sqe(ring); |
| if (!sqe) { |
| printf("get sqe failed\n"); |
| goto err; |
| } |
| |
| io_uring_prep_nop(sqe); |
| |
| ret = io_uring_submit(ring); |
| if (ret <= 0) { |
| printf("sqe submit failed: %d\n", ret); |
| goto err; |
| } |
| |
| for (i = 0; i < 2; i++) { |
| ret = io_uring_wait_cqe(ring, &cqe); |
| if (ret < 0) { |
| printf("wait completion %d\n", ret); |
| goto err; |
| } |
| io_uring_cqe_seen(ring, cqe); |
| } |
| |
| return 0; |
| err: |
| return 1; |
| } |
| |
| int main(int argc, char *argv[]) |
| { |
| struct io_uring ring, poll_ring; |
| int ret; |
| |
| ret = io_uring_queue_init(8, &ring, 0); |
| if (ret) { |
| printf("ring setup failed\n"); |
| return 1; |
| |
| } |
| |
| ret = io_uring_queue_init(8, &poll_ring, IORING_SETUP_IOPOLL); |
| if (ret) { |
| printf("poll_ring setup failed\n"); |
| return 1; |
| |
| } |
| |
| ret = test_single_link(&ring); |
| if (ret) { |
| printf("test_single_link failed\n"); |
| return ret; |
| } |
| |
| ret = test_double_link(&ring); |
| if (ret) { |
| printf("test_double_link failed\n"); |
| return ret; |
| } |
| |
| ret = test_double_chain(&ring); |
| if (ret) { |
| printf("test_double_chain failed\n"); |
| return ret; |
| } |
| |
| ret = test_single_link_fail(&poll_ring); |
| if (ret) { |
| printf("test_single_link_fail failed\n"); |
| return ret; |
| } |
| |
| return 0; |
| } |